transcrystalline

transcrystalline

[¦tranz′krist·əl·ən]
(metallurgy)
Across the crystals of a metal; used of cracks in metals. Also known as intracrystalline; transgranular.
References in periodicals archive ?
These results agree with the growth of the transcrystalline regions at the SCF surfaces: The latter, because of its low amount, need of very little PP amorphous phase as to be imbibed and then the highest PP supply to the transcrystalline regions growing around each fiber.
The results showed that transcrystalline structures formed in the inner layers of the WAIM PP/SAN blend parts at the SAN contents of 4, 6, and 8 wt%, but were absent at an SAN content of 2 wt%.
At 1,8 spot power the structure of the parent metal consists in big dendrites with different orientation, and in welded metal many cracks with transcrystalline propagation, length 200[micro]m and distance about 5-8[micro]m, figure 4b.
For the produced coatings brittle inter- and transcrystalline fracture are characteristic.
In the case of samples prepared by injection molding of PP/EPR blends, depth-profiling studies have revealed the formation of a skin consisting of several layers ("stratification"), whose composition is different compared to the bulk phase (8,9,28); a transcrystalline layer (~~10 [micro]m thick) followed by an elastomer region (~~20 [micro]m thick) were detected in the outer regions of these samples.
Contrary to this, transcrystalline cleavage cracks (Type 2) which formed during loading remained closed.
Furthermore, at 130[degrees]C the surface which is in direct contact with the chill roll shows transcrystalline structures (grown crystalline structures that can develop if the polymer melt gets in direct contact with the mold at quiescent conditions due to the high amount of nuclei at the mold).
Mixed surface with brittle aspect, by cleavages having transcrystalline and intergrain propagation.
In the failure transcrystalline fracture over seam metal and diffusion zone was combined with tough fracture of the base metal (see Figure 11, a, d).
In one study, Ryntz and Ramamurthy (4) found that a thin transcrystalline PP region developed at the TPO surface of an injection-molded PP/EPR blend.
Formation of transcrystalline regions in polypropylene was found to be directly related to the geometrical morphology or surface roughness of the mold.